Henry Bay has his own America going. If there's an offbeat interest or extreme sport that's poised to sweep the nation, chances are there's a magazine for its enthusiasts, and chances are also good that Henry has worked there. He's a modern nomad, associate-editing his way from state to state, exploring the small worlds that make up modern America from Spelunk to Ice Climbing, to Cozy, The Magazine of Tea. But those are other people's interests--Henry's...